Gearheads Swear By This Badass 3/4 Inch Aluminum Phenolic Carburetor Spacer Kit Designed For High Performance Holley Four Barrel Square Bore Carbs And Quadrajet Manifolds
✔️ Aluminum adapter, phenolic spacers, compatible Holley Quadrajet cars
This 3/4-inch carb spacer kit enhances airflow and horsepower on your 4-barrel engine. The set packs a cast aluminum adapter with phenolic spacers built for square-bore carbs like Holley and Quadrajets. Install this under the carb to boost plenum volume, which sharpens throttle response and improves mid-range torque for everyday driving.
✅ Dual configuration adapter flips to suit different hole patterns✅ Phenolic construction reduces heat transfer for denser air/fuel ratio
✅ Open spacer design expands plenum volume to increase horsepower
✅ Complete install kit adds cast aluminum plate, spacers, gasket, and bolts
💡 What does a phenolic carb spacer do for a square bore engine on a street build?
This aluminum phenolic spacer kit is a handy mod that boosts horsepower and torque without complicating your setup.
- Phenolic resin insulates the carb from heavy exhaust heat to keep air-fuel density high
- Cast aluminum adapter plate ensures a rock-solid seal and fits Holley and Quadrajet square bores
- Open center design ramps up plenum volume for faster mixture ramp-up and better bottom-end crunch